Extremely informative video. Any dialog or explanation of what you were trying to show would have only detracted from the video quality. A followup with only the audio and no video at all is the only way I could think to top it. Nicely done.
Thanks! A few months ago we went back to a home and installed magnetic stickers to the louver. That made it a bit harder to "rattle" during wind events. The stickers were about $10 at Home Depot
@@insulwiseenergycomfortsolu3293 Now that’s a damn good idea! That would definitely be worthy of another video. But I would recommend talking on that video to help the viewer understand what you’re trying to demonstrate. Good luck!
Thanks for showing us! Never seen mine up close.. but would it be possible to apply a piece of rubber or felt to prevent it 'clanking' when it flops? Follow-up question... Is this accessible from the roof? or attic only? Thanks!
It is accessible from the roof for sure. Applying a piece of rubber or felt would probably knock down the tapping noise a good bit (assuming you could get it to reliably stick). Good idea. Thanks!
That’s the draft blocker. I never understood why they designed them this way to flop around when they know the fan is going to produce at least 50 CFM they could put a bigger weight on it or the wind wind blow it around. If it bothers you glue some pennies or a weight to hold it down, but make sure you can blow it open with your breath anything further could cause damage or fire hazard. They never put the weights on the right place. I never got that seriously it should have enough weight to close as soon as the airflow stops. Instead, it flops around, waiting on the wind to pull it shut , who designed this crap? Same thing in every single house to especially those cookie cutters but those aren’t early houses
Hey there Matthew, you're 100% correct. And the idea of attaching some pennies to the top of the damper / draft blocker to weight it isn't a bad idea. That said, before doing that I would first test your bathroom fan by putting a paper towel up to it while it's running and seeing whether it holds the towel to the face of the fan. Most fans do not produce the level of CFM movement that they are rated to. I'd also have someone flip the fan on from inside after you've weighted the damper, just to make sure that the fan is able to push it up without issue. Andy
It can be a bit annoying when the wind conditions are right for it. I have heard of people attaching small "weak" magnets to the damper and the lip that it rests on, but I have not attempted that. I would be wary of risking that the damper would not open when the fan turned on. Andy
@@insulwiseenergycomfortsolu3293but for mine and many brands of fans most of the noise is created from the dampers inside the fan. I can hear the roof vent metal dampers shut though and sounds exactly like this one.
@@insulwiseenergycomfortsolu3293in my master bathroom I can hear the roof vent flap be lifted up and and tapping along with the damper in the fans themselves when it blows across the vent. And I’ve been able to observe this flapper door opening in strong winds on b other houses in my area
@@insulwiseenergycomfortsolu3293 crappy UA-cam kept deleting my comments but my house also has these roof vents and in high winds I can. Hear this same clanking sound along with the damper in the exhaust fan housing. The upstairs roof vent doesn’t clank as much but I think it has something to do with the fan being farther from the vent location and that vent appears to be a different brand than the others
So, I have seen some comments online where people have taped "weak" magnets to the damper panel so that it attaches more firmly to the housing, and only pops up when the fan pushes it up. But I've never tried this. My concern there would be that the fan might not have the force to push up the magnetized damper, resulting in water vapor being deposited in the exhaust hose and the fan not exhausting properly.
Extremely informative video. Any dialog or explanation of what you were trying to show would have only detracted from the video quality. A followup with only the audio and no video at all is the only way I could think to top it. Nicely done.
Thanks! A few months ago we went back to a home and installed magnetic stickers to the louver. That made it a bit harder to "rattle" during wind events. The stickers were about $10 at Home Depot
@@insulwiseenergycomfortsolu3293 Now that’s a damn good idea! That would definitely be worthy of another video. But I would recommend talking on that video to help the viewer understand what you’re trying to demonstrate. Good luck!
Thanks for showing us! Never seen mine up close.. but would it be possible to apply a piece of rubber or felt to prevent it 'clanking' when it flops? Follow-up question... Is this accessible from the roof? or attic only? Thanks!
It is accessible from the roof for sure. Applying a piece of rubber or felt would probably knock down the tapping noise a good bit (assuming you could get it to reliably stick). Good idea.
Thanks!
That’s the draft blocker. I never understood why they designed them this way to flop around when they know the fan is going to produce at least 50 CFM they could put a bigger weight on it or the wind wind blow it around.
If it bothers you glue some pennies or a weight to hold it down, but make sure you can blow it open with your breath anything further could cause damage or fire hazard. They never put the weights on the right place. I never got that seriously it should have enough weight to close as soon as the airflow stops. Instead, it flops around, waiting on the wind to pull it shut , who designed this crap? Same thing in every single house to especially those cookie cutters but those aren’t early houses
Hey there Matthew, you're 100% correct. And the idea of attaching some pennies to the top of the damper / draft blocker to weight it isn't a bad idea. That said, before doing that I would first test your bathroom fan by putting a paper towel up to it while it's running and seeing whether it holds the towel to the face of the fan. Most fans do not produce the level of CFM movement that they are rated to. I'd also have someone flip the fan on from inside after you've weighted the damper, just to make sure that the fan is able to push it up without issue.
Andy
Sounds exactly like mine. Mine go clap clop clip with every gust. Slammed open then shut.
It can be a bit annoying when the wind conditions are right for it. I have heard of people attaching small "weak" magnets to the damper and the lip that it rests on, but I have not attempted that. I would be wary of risking that the damper would not open when the fan turned on.
Andy
@@insulwiseenergycomfortsolu3293but for mine and many brands of fans most of the noise is created from the dampers inside the fan. I can hear the roof vent metal dampers shut though and sounds exactly like this one.
@@insulwiseenergycomfortsolu3293in my master bathroom I can hear the roof vent flap be lifted up and and tapping along with the damper in the fans themselves when it blows across the vent. And I’ve been able to observe this flapper door opening in strong winds on b other houses in my area
@@insulwiseenergycomfortsolu3293 crappy UA-cam kept deleting my comments but my house also has these roof vents and in high winds I can. Hear this same clanking sound along with the damper in the exhaust fan housing. The upstairs roof vent doesn’t clank as much but I think it has something to do with the fan being farther from the vent location and that vent appears to be a different brand than the others
Came looking for answers.
Hope this helped! The rattling "tink tink" sound is common with these vent types when wind hits them right.
Andy
What type of vent is it ?
Thanks for sharing !
It is a Broan RVK1-A metal roof vent for venting bathroom fans.
Andy
How do we stop it
So, I have seen some comments online where people have taped "weak" magnets to the damper panel so that it attaches more firmly to the housing, and only pops up when the fan pushes it up. But I've never tried this. My concern there would be that the fan might not have the force to push up the magnetized damper, resulting in water vapor being deposited in the exhaust hose and the fan not exhausting properly.